// 代码题
// 1-1
const promise = new Promise((resolve, reject) => {
    let a, b, c = ''
    resolve()
})
promise.then(() => a = 'hello')
    .then(() => b = ' lagou ')
    .then(() => {
        c = 'I ❤ U'
        console.log(a + b + c)
    })